CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
2.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features.
JC,
the
“case temp” is measured at the center of the exposed metal pad on the package underside. See Tech Brief TB379.
Electrical Specifications
Unless Otherwise Specified, T
A
= -40°C to 85°C for industrial (I) grade and T
A
= 0°C to 85°C for commercial
(C) grade, V
BL
= -24V, V
BH
= -100V, -85V or -75V, V
CC
= +3.3V, AGND = BGND = 0V, loop current limit =
25mA. All AC transmission parameters are specified at 600W 2-wire terminating impedance over the frequency
band of 300Hz to 3.4kHz. Protection resistors = 0W.
TEST CONDITIONS
MIN
TYP
MAX
UNITS
PARAMETER
RINGING PARAMETERS
VRS Input Impedance (Note 3)
Differential Ringing Gain (Note 4)
450
Balanced Ringing, VRS to 2-Wire, R
LOAD
=
Unbalanced Ringing, VRS to 2-Wire, R
LOAD
=
78
38
-
-
-
-
-
-
-
-
80
40
± 2.5
± 2.5
67
33.5
-
90
80
-
82
42
-
-
-
-
4.0
-
-
k
V/V
V/V
V
V
V
RMS
V
RMS
%
dB
dB
Centering Voltage Accuracy
Tip, Referenced to V
BH
/2 + 0.5 (Note 9)
Ring, Referenced to V
BH
/2 + 0.5
Open Circuit Ringing Voltage
Balanced Ringing, VRS Input=0.840V
RMS
Unbalanced Ringing, VRS Input=0.840V
RMS
Ringing Voltage Total Distortion
4-Wire to 2-Wire Ringing Off Isolation
2-Wire to 4-Wire Transmit Isolation
AC TRANSMISSION PARAMETERS
Auxiliary Input Impedance (Note 3)
Transmit Output Impedance (Note 3)
4-Wire Port Overload Level
2-Wire Port Overload Level
R
L
=1.3 k, V
T-R
=|V
BH
| -5
Active Mode, Referenced to VRS Input
Ringing Mode Referenced to the Differential Ringing
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Industrial Control Electronics
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